Top roll



L. D. COBB TOP ROLL Aug. 8, 1944. 1

Filed Dec'. 31, 1941 INVENTOR; LELAND 0. COBB.

HIS/\TTORNEY.

Patented Aug. 8, 1944 TOP! ROLL t Leland D. Cobb; ,Forestville, Comm, -assignor to General Motors Corporation, Detroit, Mich, a corporation of Delaware I Application December 31, 1941, Serial No. 425,144

8 Claims; (C1. 19-142) This invention relates to top rolls for attenuating machinery in the vtextile industry, and particularly to top rolls for spinning frames, drawing frames and the like wherein a stripof intermingled fibers such as sliver, roving ,or thread is stretched and reduced in size by feeding it between top and bottom roll members that are urged into peripheral rolling engagement with each other. 7

An object of this invention is to provide an after described and claimed.

In the accompanying drawing:

plication of this invention;

tion through the top roll; and

the line 33 of Figure 2'.

members I 0.

and bottom roll members.

I :Referringinvdetail to the drawing, the roll These studs 24 The innermost counterlO ably and closely fit over the ends of the shaft l2, improved top roll of simplified construction and and a reduced cylindrical necked outer end 23 which has individually demountable roll memoneach roll member, which is guided by one of hers that are arranged for unitary rotation, A theslots l4, removablyreceives the threaded outfurther object is to provide a unit-handling top er end of a stud 24 provided with a reduced roll wherein interchangeable top roll members portion 25 that removably fits in a transverse are supported for coaxial rotation as a unit and bore in the shaft I2, to demountably secure the wherein a pressure transmitting sleeve between roll member ID on the shaft l2. the roll members is supported in relatively rohold my top roll parts in assembled unit-handling tatable antifrictional relation to the roll memrelation, and in the event that a'machine operabers to uniformly urge both roll members downtor should desire to relubricate the bearings or replace any of the top roll parts, it is only neces- To these ends and also to improve generally sary to'remove the studs 24 whereupon the variupon devices of the character indicated, the inous parts may be slidably disassembled. The vention consists in the various matters hereininner end of each roll member I0 has successively smaller coaxial counterbores 21, 28 and 29, the intermediate counterbore frictionally and de-' Figure 1 is a perspective view showing an apmountably receiving an outer race ring 32 of the unit-handling antifriction bearing I8 that has Figure 2 is a view mainly in longitudinal secfreely rolling elements such as bearing balls roll- I ing in ra'ceways-in the outer race ring32 and in Figure 3 is an enlarged cross scetion takenalong 30 an inner race ring 33.

' The outer race rings 32 respectively seat Generally stated, I have provided a unit-hanagainst shoulder 34 at the inner ends of the filing D roll T that has top r011 e s counterbores 28, and the inner race rings 33 which demountably fastened in spaced relation on the are/centrally bored to be Supported in annularly opposite ends of a shaft l2,and the necked outer 35 spaced relation about the Shaft n by the bear; en-ds f. these roll members are demountably eing balls, axially extend out of the outer race f 1n gmded rings and towards each other into demountably non m Slots g w m gmde seated relation in the opposite ends of counterpressure transmitting sleevelB, eilrtendmg into 40 bores-35in the Sleeve '6 which is centrallyrbovred and betweemthese roll members 10, surrounds 31335150 be a'nnularly spaced about the shaft 12. the shaft m annular 1y Spaced re at1n.and 15 These inner race rings 33, which co-operatively demountably supported at its ends by un1t-han- Su rt the sle ve [6i a d 81 be t th dling antifriction bearings l8 spaced about the ppo I2 n Sp r a Ion a u e shaft I2 and respectively mounted in the roll shaft enper substantlany bottommg A pressure foot P, suitably urged gagement with the inner ends of the counterbores downwardly into Seated relation in a groove 20 35 to axially locate the sleeve l6 relative to the in the sleeve l6, presses the roll members [0 top mu members into peripherally supported rolling contact with borfes as lubrlcant weus for the Similarly positioned bottom r011 members R antifrlction bearings I 8, and a cylmdrical flange formed on a suitably driven bottom roll B, so near each end of the Sleeve and lying in that a strip of intermingled fibers, such as sliver, closely p c relation within the outer end of roving, yarn or thread and generally designated each counterbore Z1, acts as a Shield which D at S will be subjected to a controlled attenuating vents the egress of lubricant from the top roll operation as it is fed between the coacting top members and the ingress of dust or other deleterious matter into the bearings.

supporting said sleeve in annular spaced relation 1 about said shaft.

2. In a top roll for textile machinery, a shaft,

a pair of spaced roll members demountably secured on the ends of said shaft, a pair of .unitmounted on the shaft, each roll member comprising a cot-carrying portion and a reduced end portion to enter a guide slot, the adjacent ends of the roll members being open and spaced from the shaft, and the remaining portions of the roll members being bored for a sliding fit on the shaft, means for detachably securing the bored portion to the shaft, an antifriction bearing mounted within and supported by each roll member, and a non-rotary pressure transmitting sleeve clearing the shaft and supported by said antifriction bearings independently of the shaft, the sleeve extending between the open ends of the roll members from one of the suphandling antifriction bearings, each bearing in one of said roll members and having an inner race ring surrounding said shaft in spaced relaj tion, a sleeve surrounding said shaft, and said inner race rings having inwardly jprojecting portions demountably received in the sleeve ends and supporting the sleeve out of contact with said roll members and with said shaft.

3. In a top roll for textile machinery, a pair of spaced roll members having axial" bores therethrough, a shaft having its ends respectively seated in said bores, fastening elements detachably securing the roll members to said shaft ends, the inner end of each of said roll members having a counterbore, a sleeve member surrounding said shaft and having ends within said counterbores, a unit-handling antifriction hearing demountably seated in each counterbore, each bea i g being supported by one of said roll members in annularly spaced relation to said shaft, and race rings of said bearings demountably seated in the ends of said sleeve and sup, porting said sleeve in annular spaced relation to said roll members and to said shaft.

4. A top roll for textile machinery and comprising a shaft, 2. pair of interchangeable roll members having axial bores receiving said shaft, a reduced cylindrical outer end on each roll member, a fastening element detachably secured in each of said reduced outer ends, saidfastening elements entering the shaft and demountably securing the roll members to the shaft in predetermined spaced relation, the inner end of each roll member having a counterbore, a sleeve surrounding the shaft and having ends respectively received in said counterbores, an antifriction bearing demountably seated in each counterbore and having a race ring surrounding said shaft in annularly spaced relation, and each of said race rings having an axially projecting portion demountably received in an end of said sleeve to support said sleeve in annularly spaced relation to said shaft and to said roll members.

5. In a top roll for textile machinery, a rotary shaft, a pair of axially spaced roll members porting bearings to the other.

, 6. In atop roll for textile machinery, a rotary shaft, a pair of axially spaced roll members mounted on the shaft, the adjacent ends of the roll members being open and spaced from the shaft and the remaining portions of said roll membersbeing' bored for a sliding fit on the shaft, means for detachably securing the bored portions-to the'shaft, a non-rotary pressure transmitting sleeve entering the open ends of the "roll members, and an anti-friction bearing seated in and supported by each roll member in spaced relation to said shaft and supporting the sleeve out of engagement with said shaft for transmitting pressures from the sleeve to the roll members independently of said shaft.

7. In a top roll for textile machinery, a rotary shaft, a pair of axially spaced roll members, each having its outer end' portion bored to slide on and *01T an end of the shaft and the other end of each roll member being open and spaced from the shaft, means for detachably securing the bored end portions of said roll members to the shaft, a non-rotary pressure transmitting sleeve entering the open ends of the roll members, a pair of antifriction bearings surrounding the shaft, each bearing comprising a series of rolling elements and an outer race ring seated in the interior of one of the roll members, and the non-rotary sleeve having raceway means thereon to engage the rolling elements of said bearing for supporting the sleeve in spaced relation to the rotary shaft.

8. In a top roll for textile machinery, a rotary shaft, a pair of axially spaced roll members closed at one end and open at the other, means for securing the closed ends to the ends of the shaft, a non-rotary pressure transmitting sleeve entering the open ends of the roll members, a pair of antifriction bearings each bearing including an inner race ring and an outer race and a seriesof rolling elements, one of the race rings of each bearing engaging the interior of one roll member and the other race ring engaging the non-rotating sleeve to support said sleeve in spaced relation to the rotary shaft.

. LELAND D. COBB. 

